It is said that looking at the board while trying to work out a move sequence is more of a hinderance than a help.
That the board hides the ranks, files and diagonals that get opened up and closed down by piece movements.

If you can hold the board in your head then it is easy to shift the pieces around and visualize the new board just as easily as the current board.

This isn't an easy task but these webpages will help you build up your visualization talent.
Start with a few pieces in a small part of the board and increase the number of pieces and space they use.

The webpages are as follows:

Options - Set the # of pieces and fraction of the board used. Start small and work your way up

Try a Board - You'll be shown a board layout and when you're ready, the board will be cleared and then you can drag pieces to recreate the setup

Evaluation Test - Have the website automatically walk you through a series of boards to find your proficiency